<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<a href="subframe/top.html" target="contentFrame">top</a>
	<a href="subframe/bottom.html" target="contentFrame">bottom</a>
	<hr/>
	<iframe name="contentFrame" src="subframe/middle.html" width="1027px" height="768" frameborder="3" ></iframe>

</body>
</html>